ZN8 Differential Oil Cooler Kit | GR86 & BRZ Cup Certified

ZN8 Differential Oil Cooler Kit
Part Number: HPDOC-ZN8R1 / HPDOC-ZN8R2
 
Protect your differential from high-temperature issues common in high-performance vehicles!
During circuit driving where high RPM is frequently maintained, differential oil temperatures can soar.
 
This often leads to issues such as blow-by ejection, oil film breakage, and LSD slippage, which in the worst-case scenario can cause a total differential failure.
By installing this product and maintaining optimal oil temperatures, you can prevent these troubles before they occur.
 
Model Variants & TRA Approval Numbers
Ver. 1: Right Rear Mount (9-Row Drawn Cup Core)
Part Number: HPDOC-ZN8R1 (TRA Approval No. 220318-079)
Ver. 2: Right Rear Mount (W4 Side Tank Core)
Part Number: HPDOC-ZN8R2 (TRA Approval No. 230322-156)
 
Product Specifications & Features
Kit Contents:
Oil Cooler Assembly
Pre-assembled Dedicated Hoses
Oil Pump
Oil Filter
Full set of Unions and Hardware
Short parts for installation
 
 
Color Update for Drawn Cup Core (for HPDOC-Z#R1):
9-Row Core: Former Color (Gold)
→ New Color: Black
[!NOTE] This is a running change based on customer feedback. Performance and dimensions remain identical. Specific color requests cannot be accepted.
There is no change to the color or specifications of the Side Tank Core (for HPDOC-Z#8R2).